Gram , Hans Christian Joachim
(1853–1938) Danish bacteriologist
Gram graduated in medicine from the university in his native city of Copenhagen in 1878 and from 1883 to 1885 traveled in Europe, studying pharmacology and bacteriology. While in Berlin (1884) he discovered the method of staining bacteria with which his name has become associated. He followed the method of Paul Ehrlich, using aniline-water and gentian violet solution. After further treatment with Lugol's solution (iodine in aqueous potassium iodide) and ethanol he found that some bacteria (such as pneumococcus) retained the stain (Gram positive) while others did not (Gram negative). This discovery is of great use in the identification and classification of bacteria. It is also useful in deciding the treatment of bacterial diseases, since penicillin is active only against Gram-positive bacteria; the cell walls of Gram-negative bacteria will not take up either penicillin or Gram's stain.
In 1891 Gram became professor of pharmacology at the University of Copenhagen, where he showed a keen interest in the clinical education of the students. During this time he had a large medical practice in the city. He was chairman of the Pharmacopoeia Commission from 1901 to 1921 and director of the medical department of Frederick's Hospital, Copenhagen, until he retired in 1923.

Scientists. . 2011.

Look at other dictionaries:

  • Gram, Hans Christian Joachim — Médico danés nacido en 1853 que descubrió el método de tinción que lleva su nombre y que permite diferenciar las bacterias en gram positivas y gram negativas. Falleció en 1938. Medical Dictionary. 2011 …   Diccionario médico

  • GRAM Hans Christian Joachim — (1853 1938) (retrato= [véase http://www.iqb.es/historiamedicina/personas/gram.htm]: médico y bacteriólogo danés famoso por el método de tinción de las bacterias que lleva su nombre Diccionario ilustrado de Términos Médicos.. Alvaro Galiano. 2010 …   Diccionario médico

  • Hans Christian Joachim Gram — Gram, Hans Christian Joachim Médico danés nacido en 1853 que descubrió el método de tinción que lleva su nombre y que permite diferenciar las bacterias en gram positivas y gram negativas. Falleció en 1938. Medical Dictionary. 2011 …   Diccionario médico

  • Hans Christian Gram — Born September 13, 1850 (1850 09 13) Died November 14, 19 …   Wikipedia

  • Hans Christian Gram — Hans Christian Joachim Gram (1853 1938) fue un bacteriólogo danés que desarrolló la tinción de Gram, de amplio uso en microbiología. Contenido 1 Biografía 2 Tinción de Gram 3 Nombramiento de Profesor 4 E …   Wikipedia Español

  • Hans Christian Gram — Hans Christian Joachim Gram (* 13. September 1853 in Kopenhagen; † 15. November 1938) war ein dänischer Bakteriologe. Leben Gram studierte zunächst Botanik, später auch Medizin, an der Universität Kopenhagen bis zum Abschluss 1883. 1891 wurde er… …   Deutsch Wikipedia

  • Hans Christian Gram — Hans Christian Joachim Gram, né à Copenhague le 13 septembre 1853 et mort le 14 novembre 1938, est un bactériologiste danois. Il étudia la botanique avant d entamer des études médicales en 1878. Il a voyagé à travers l Europe… …   Wikipédia en Français

  • gram — [ gram ] n. m. inv. • 1897; de coloration de Gram, nom d un bactériologiste danois ♦ Biol. Méthode de coloration des microbes avec une solution à base d iode et d iodure de potassium. ⊗ HOM. Gramme. ● Gram nom masculin invariable Coloration de… …   Encyclopédie Universelle

  • Gram's solution — gramz n a watery solution of iodine and the iodide of potassium used in staining bacteria by Gram s stain Gram gräm Hans Christian Joachim (1853 1938) Danish physician. Gram introduced his method for the differential staining of bacteria in 1884 …   Medical dictionary

  • Gram method stain solution — (gram) [Hans Christian Joachim Gram, Danish physician, 1853–1938] see Stains and Staining Methods, under stain, and see gram negative and gram positive …   Medical dictionary

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”